Dong Xianming, Xiong Ying, Chen Guangshun, Guo Shaoyun
Appl Opt. 2015 Feb 1;54(4):608-14. doi: 10.1364/AO.54.000608.
The polycarbonate (PC)/poly(styrene-co-acrylonitrile) (SAN) (70/30) anisotropic light scattering sheet with controllable anisotropic degree was prepared by blending and hot stretching process. The morphological evolution of the dispersed particles for PC/SAN (70/30) blend during hot stretching was observed by a scanning electron microscope (SEM) and the effect of stretching deformation on the light scattering properties was investigated. The SEM photographs revealed that SAN particles deformed into ellipsoid during hot stretching. The scattering properties analysis results revealed the appearance of anisotropic light scattering for PC/SAN (70/30) blends with various deformations, and with the increase of stretching deformation, the anisotropic scattering degree increased, verifying the correctness of geometrical optical scattering theoretical analysis.
通过共混和热拉伸工艺制备了具有可控各向异性程度的聚碳酸酯（PC）/聚（苯乙烯 - 丙烯腈）（SAN）（70/30）各向异性光散射片材。利用扫描电子显微镜（SEM）观察了PC/SAN（70/30）共混物在热拉伸过程中分散颗粒的形态演变，并研究了拉伸变形对光散射性能的影响。SEM照片显示，SAN颗粒在热拉伸过程中变形为椭球体。散射性能分析结果表明，不同变形程度的PC/SAN（70/30）共混物均出现了各向异性光散射，且随着拉伸变形的增加，各向异性散射程度增大，验证了几何光学散射理论分析的正确性。
